Heat dissipating module

ABSTRACT

A heat dissipating module includes a heat dissipating unit and a fan unit. The heat dissipating unit includes a plurality of heat dissipating fins sequentially stacked on top of one another. Each of the heat dissipating fins has a first end portion and a second end portion. The first end portion of each heat dissipating fin is divided into a first inclined airflow-guiding section and a second inclined airflow-guiding section, the first inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent downward and slantwise, and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent upward and slantwise. The fan unit includes at least one fan adjacent to the heat dissipating unit for facing the first inclined airflow-guiding section and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The instant disclosure relates to a heat dissipating module, and more particularly to a heat dissipating module using a plurality of airflow-guiding structures adjacent to inlet for increasing its heat dissipating efficiency.

2. Description of Related Art

A conventional heat sink is a metal device with multiple fins and at least one heat pipe. The fins are stacked and each fin has a surface area, multiple through holes and multiple protrusions. The through holes are defined by the fins and correspond to and align with the through holes of adjacent fins. The protrusions are formed around the through holes and have inner surfaces. The at least one heat pipe abuts an electronic device and is mounted through corresponding through holes and has a pipe wall. Solder is filled between the pipe wall of the at least one heat pipe and the internal surfaces of the protrusions to weld the heat pipe and the protrusions. The heat pipe absorbs heat from the electronic device and transmits the heat to the fins that radiate the heat to the air rapidly due to the surface area of the fins.

SUMMARY OF THE INVENTION

One aspect of the instant disclosure relates to a heat dissipating module using a plurality of airflow-guiding structures adjacent to inlet for increasing its heat dissipating efficiency.

One of the embodiments of the instant disclosure provides a heat dissipating module, comprising: a heat dissipating unit and a fan unit. The heat dissipating unit includes a plurality of heat dissipating fins sequentially stacked on top of one another, wherein each of the heat dissipating fins has a first end portion and a second end portion opposite to the first end portion, the first end portion of each heat dissipating fin is divided into a first inclined airflow-guiding section and a second inclined airflow-guiding section separated from the first inclined airflow-guiding section, the first inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent downward and slantwise, and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent upward and slantwise. The fan unit includes at least one fan adjacent to the heat dissipating unit, wherein the at least one fan faces both the first inclined airflow-guiding section and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin.

More precisely, each of the heat dissipating fins has a connection portion integrally connected between the first end portion and the second end portion, any two adjacent connection portions are separated from each other by a predetermined distance, both the first inclined airflow-guiding section and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin are slantwise connected to the connection portion, and the second end portion of each heat dissipating fin is horizontal to the connection portion.

More precisely, each of the heat dissipating fins has a connection portion connected between the first end portion and the second end portion, the first inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent downward and slantwise relative to the connection portion by a first predetermined acute angle less than 90 degrees, and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent upward and slantwise relative to the connection portion by a second predetermined acute angle less than 90 degrees.

More precisely, the heat dissipating unit includes a plurality of first airflow-guiding inlets, a plurality of second airflow-guiding inlets respectively adjacent to the first airflow-guiding inlets, and a plurality of common outlets respectively corresponding to the first airflow-guiding inlets or the second airflow-guiding inlets, each of the first airflow-guiding inlets is formed between the two adjacent first inclined airflow-guiding sections, each of the second airflow-guiding inlets is formed between the two adjacent second inclined airflow-guiding sections, and each of the common outlets is formed between the two adjacent second end portions, wherein cooling airs generated by the at least one fan flow into the heat dissipating unit through both the first airflow-guiding inlets and the second airflow-guiding inlets.

More precisely, the heat dissipating module further comprises: a heat pipe unit including a plurality of heat pipe structures, wherein each of the heat pipe structures passes through the heat dissipating fins, and the at least one fan is an axial flow fan.

Another one of the embodiments of the instant disclosure provides a heat dissipating module, comprising: a first heat dissipating unit, a second heat dissipating unit and a fan unit. The first heat dissipating unit includes a plurality of first heat dissipating fins sequentially stacked on top of one another, wherein each of the first heat dissipating fins has a first end portion and a second end portion opposite to the first end portion, the first end portion of each first heat dissipating fin has a first inclined airflow-guiding section bent downward and slantwise. The second heat dissipating unit is separated from the first heat dissipating unit by a predetermined distance, the second heat dissipating unit includes a plurality of second heat dissipating fins sequentially stacked on top of one another and respectively corresponding to the first heat dissipating fins, wherein each of the second heat dissipating fins has a first end portion and a second end portion opposite to the first end portion, the first end portion of each second heat dissipating fin has a second inclined airflow-guiding section bent upward and slantwise. The fan unit includes at least one fan adjacent to the first heat dissipating unit and the second heat dissipating unit, wherein the at least one fan faces both the first inclined airflow-guiding section of the first end portion of each first heat dissipating fin and the second inclined airflow-guiding section of the first end portion of each second heat dissipating fin.

More precisely, each of the first heat dissipating fins has a connection portion integrally connected between the first end portion and the second end portion of the first heat dissipating fin, any two adjacent connection portions of the first heat dissipating fin are separated from each other by a predetermined distance, the first inclined airflow-guiding section of the first end portion of each first heat dissipating fin is slantwise connected to the connection portion of the first heat dissipating fin, and the second end portion of each first heat dissipating fin is horizontal to the connection portion of the first heat dissipating fin, wherein each of the second heat dissipating fins has a connection portion integrally connected between the first end portion and the second end portion of the second heat dissipating fin, any two adjacent connection portions of the second heat dissipating fin are separated from each other by a predetermined distance, the second inclined airflow-guiding section of the first end portion of each second heat dissipating fin is slantwise connected to the connection portion of the second heat dissipating fin, and the second end portion of each second heat dissipating fin is horizontal to the connection portion of the second heat dissipating fin.

More precisely, each of the first heat dissipating fins has a connection portion connected between the first end portion and the second end portion of the first heat dissipating fin, and the first inclined airflow-guiding section of the first end portion of each first heat dissipating fin is bent downward and slantwise relative to the connection portion of the first heat dissipating fin by a first predetermined acute angle less than 90 degrees, wherein each of the second heat dissipating fins has a connection portion connected between the first end portion and the second end portion of the second heat dissipating fin, and the second inclined airflow-guiding section of the first end portion of each second heat dissipating fin is bent upward and slantwise relative to the connection portion of the second heat dissipating fin by a second predetermined acute angle less than 90 degrees

More precisely, the first heat dissipating unit includes a plurality of first airflow-guiding inlets and a plurality of first outlets respectively corresponding to the first airflow-guiding inlets, each of the first airflow-guiding inlets is formed between the two adjacent first inclined airflow-guiding sections of the first heat dissipating unit, each of the first outlets is formed between the two adjacent second end portions of the first heat dissipating unit, and cooling airs generated by the at least one fan flow into the first heat dissipating unit through the first airflow-guiding inlets.

More precisely, the second heat dissipating unit includes a plurality of second airflow-guiding inlets and a plurality of second outlets respectively corresponding to the second airflow-guiding inlets, each of the second airflow-guiding inlets is formed between the two adjacent second inclined airflow-guiding sections of the second heat dissipating unit, each of the second outlets is formed between the two adjacent second end portions of the second heat dissipating unit, and cooling airs generated by the at least one fan flow into the second heat dissipating unit through the second airflow-guiding inlets.

Therefore, the heat dissipating efficiency of the heat dissipating module can be increased due to the design of “the first inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent downward and slantwise, and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent upward and slantwise” or “the first end portion of each first heat dissipating fin has a first inclined airflow-guiding section bent downward and slantwise, and the first end portion of each second heat dissipating fin has a second inclined airflow-guiding section bent upward and slantwise”.

To further understand the techniques, means and effects of the instant disclosure applied for achieving the prescribed objectives, the following detailed descriptions and appended drawings are hereby referred to, such that, and through which, the purposes, features and aspects of the instant disclosure can be thoroughly and concretely appreciated. However, the appended drawings are provided solely for reference and illustration, without any intention to limit the instant disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a perspective, schematic view of a single heat dissipating fin of the heat dissipating module according to the first embodiment of the instant disclosure;

FIG. 2 shows a perspective, assembled, schematic view of the heat dissipating module according to the first embodiment of the instant disclosure;

FIG. 3A shows a cross-sectional view taken along the section line 3A-3A of FIG. 2;

FIG. 3B shows a cross-sectional view taken along the section line 3B-3B of FIG. 2;

FIG. 4 shows a perspective, schematic view of the heat dissipating module using a plurality of heat pipe structures according to the first embodiment of the instant disclosure;

FIG. 5A shows a perspective, schematic view of a single first heat dissipating fin of the heat dissipating module according to the second embodiment of the instant disclosure;

FIG. 5B shows a perspective, schematic view of a single second heat dissipating fin of the heat dissipating module according to the second embodiment of the instant disclosure;

FIG. 6 shows a perspective, assembled, schematic view of the heat dissipating module according to the second embodiment of the instant disclosure;

FIG. 7A shows a cross-sectional view taken along the section line 7A-7A of FIG. 6; and

FIG. 7B shows a cross-sectional view taken along the section line 7B-7B of FIG. 6.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The embodiments of “a heat dissipating module” of the instant disclosure are described. Other advantages and objectives of the instant disclosure can be easily understood by one skilled in the art from the disclosure. The instant disclosure can be applied in different embodiments. Various modifications and variations can be made to various details in the description for different applications without departing from the scope of the instant disclosure. The drawings of the instant disclosure are provided only for simple illustrations, but are not drawn to scale and do not reflect the actual relative dimensions. The following embodiments are provided to describe in detail the concept of the instant disclosure, and are not intended to limit the scope thereof in any way.

First Embodiment

Referring to FIG. 1 to FIG. 4, the first embodiment of the instant disclosure provides a heat dissipating module M for increasing heat dissipating efficiency, comprising: a heat dissipating unit 1 and a fan unit 2.

First, referring to FIG. 1 and FIG. 2, the heat dissipating unit 1 includes a plurality of heat dissipating fins 10 sequentially stacked on top of one another, and each of the heat dissipating fins 10 has a first end portion 101 and a second end portion 102 opposite to the first end portion 101. In addition, the first end portion 101 of each heat dissipating fin 10 may be divided into a first inclined airflow-guiding section 1011 and a second inclined airflow-guiding section 1012 separated from the first inclined airflow-guiding section 1011. The first inclined airflow-guiding section 1011 of the first end portion 101 of each heat dissipating fin 10 can be bent downward and slantwise, and the second inclined airflow-guiding section 1012 of the first end portion 101 of each heat dissipating fin 10 can be bent upward and slantwise.

More precisely, referring to FIG. 1, FIG. 3A and FIG. 3B, each of the heat dissipating fins 10 has a connection portion 103 integrally connected between the first end portion 101 and the second end portion 102. Any two adjacent connection portions 103 are separated from each other by a predetermined distance, both the first inclined airflow-guiding section 1011 and the second inclined airflow-guiding section 1012 of the first end portion 101 of each heat dissipating fin 10 are slantwise connected to the connection portion 103, and the second end portion 102 of each heat dissipating fin 10 is substantially horizontal to the connection portion 103. As shown in FIG. 3A, the first inclined airflow-guiding section 1011 of the first end portion 101 of each heat dissipating fin 10 is bent downward and slantwise relative to the connection portion 103 by a first predetermined acute angle θ1 less than 90 degrees, such as the first predetermined acute angle θ1=30° shown in FIG. 3A, but it is merely an example and is not meant to limit the instant disclosure. As shown in FIG. 3B, the second inclined airflow-guiding section 1012 of the first end portion 101 of each heat dissipating fin 10 is bent upward and slantwise relative to the connection portion 103 by a second predetermined acute angle θ2 less than 90 degrees, such as the second predetermined acute angle θ2=30° shown in FIG. 3B, but it is merely an example and is not meant to limit the instant disclosure.

More precisely, referring to FIG. 2, FIG. 3A and FIG. 3B, the heat dissipating unit 1 includes a plurality of first airflow-guiding inlets 11, a plurality of second airflow-guiding inlets 12 respectively adjacent to the first airflow-guiding inlets 11, and a plurality of common outlets 13 respectively corresponding to the first airflow-guiding inlets 11 or the second airflow-guiding inlets 12. In addition, each of the first airflow-guiding inlets 11 is formed between the two adjacent first inclined airflow-guiding sections 1011 (as shown in FIG. 3A), each of the second airflow-guiding inlets 12 is formed between the two adjacent second inclined airflow-guiding sections 1012 (as shown in FIG. 3B), and each of the common outlets 13 is formed between the two adjacent second end portions 102 (as shown in FIG. 3A and FIG. 3B). Hence, the two adjacent first inclined airflow-guiding sections 1011 and the two adjacent second inclined airflow-guiding sections 1012 can share the corresponding common outlets 13.

Moreover, referring to FIG. 3A and FIG. 3B, the fan unit 2 includes at least one fan 20 adjacent to the heat dissipating unit 1, and the at least one fan 20 faces both the first inclined airflow-guiding section 1011 and the second inclined airflow-guiding section 1012 of the first end portion 101 of each heat dissipating fin 10. For example, the at least one fan 20 may be an axial flow fan, and the axial flow fan has a plurality of blades rotated counterclockwise to generate cooling airs for the heat dissipating fins 10, but it is merely an example and is not meant to limit the instant disclosure. More precisely, referring to FIG. 3A, because the first inclined airflow-guiding section 1011 of the first end portion 101 of each heat dissipating fin 10 is bent downward and slantwise relative to the connection portion 103 by the first predetermined acute angle θ1 less than 90 degrees, oblique upward cooling airs W1 generated by the at least one fan 20 can easily and unobstructively flow into the heat dissipating unit 1 through the first airflow-guiding inlets 11, so as to increase the heat dissipating efficiency of the heat dissipating fins 10 of the heat dissipating unit 1. In addition, referring to FIG. 3B, because the second inclined airflow-guiding section 1012 of the first end portion 101 of each heat dissipating fin 10 is bent upward and slantwise relative to the connection portion 103 by the second predetermined acute angle θ2 less than 90 degrees, oblique downward cooling airs W2 generated by the at least one fan 20 can easily and unobstructively flow into the heat dissipating unit 1 through the second airflow-guiding inlets 12, so as to increase the heat dissipating efficiency of the heat dissipating fins 10 of the heat dissipating unit 1.

It is worth mentioning that, referring to FIG. 4, the heat dissipating module M of the first embodiment of the instant disclosure further comprises a heat pipe unit 3. The heat pipe unit 3 includes a plurality of heat pipe structures 30, and each of the heat pipe structures 30 can concurrently pass through the heat dissipating fins 10.

Second Embodiment

Referring to FIG. 5A to FIG. 7B, the second embodiment of the instant disclosure provides a heat dissipating module M for increasing heat dissipating efficiency, comprising: a first heat dissipating unit 1A, a second heat dissipating unit 1B and a fan unit 2.

First, referring to FIG. 5A and FIG. 6, the first heat dissipating unit 1A and the second heat dissipating unit 1B are separated from each other by a predetermined distance. The first heat dissipating unit 1A includes a plurality of first heat dissipating fins 10A sequentially stacked on top of one another. Each of the first heat dissipating fins 10A has a first end portion 101A and a second end portion 102A opposite to the first end portion 101A, and the first end portion 101A of each first heat dissipating fin 10A has a first inclined airflow-guiding section 1010A bent downward and slantwise. In addition, the second heat dissipating unit 1B includes a plurality of second heat dissipating fins 10B sequentially stacked on top of one another and respectively corresponding to the first heat dissipating fins 10A. Each of the second heat dissipating fins 10B has a first end portion 101B and a second end portion 102B opposite to the first end portion 101B, and the first end portion 101B of each second heat dissipating fin 10B has a second inclined airflow-guiding section bent 1010B upward and slantwise.

More precisely, referring to FIG. 5A and FIG. 7A, each of the first heat dissipating fins 10A has a connection portion 103A integrally connected between the first end portion 101A and the second end portion 102A of the first heat dissipating fin 10A. Any two adjacent connection portions 103A of the first heat dissipating fin 10A are separated from each other by a predetermined distance, the first inclined airflow-guiding section 1010A of the first end portion 101A of each first heat dissipating fin 10A is slantwise connected to the connection portion 103A of the first heat dissipating fin 10A, and the second end portion 102A of each first heat dissipating fin 10A is substantially horizontal to the connection portion 103A of the first heat dissipating fin 10A. For example, as shown in FIG. 7A, the first inclined airflow-guiding section 1010A of the first end portion 101A of each first heat dissipating fin 10A is bent downward and slantwise relative to the connection portion 103A of the first heat dissipating fin 10A by a first predetermined acute angle θ1 less than 90 degrees, such as the first predetermined acute angle θ1=30° shown in FIG. 7A, but it is merely an example and is not meant to limit the instant disclosure.

More precisely, referring to FIG. 5B and FIG. 7B, each of the second heat dissipating fins 10B has a connection portion 103B integrally connected between the first end portion 101B and the second end portion 102B of the second heat dissipating fin 10B. Any two adjacent connection portions 103B of the second heat dissipating fin 10B are separated from each other by a predetermined distance, the second inclined airflow-guiding section 1010B of the first end portion 101B of each second heat dissipating fin 10B is slantwise connected to the connection portion 103B of the second heat dissipating fin 10B, and the second end portion 102B of each second heat dissipating fin 10B is substantially horizontal to the connection portion 103B of the second heat dissipating fin 10B. For example, as shown in FIG. 7B, the second inclined airflow-guiding section 1010B of the first end portion 101B of each second heat dissipating fin 10B is bent upward and slantwise relative to the connection portion 103B of the second heat dissipating fin 10B by a second predetermined acute angle θ2 less than 90 degrees, such as the second predetermined acute angle θ2=30° shown in FIG. 7B, but it is merely an example and is not meant to limit the instant disclosure.

More precisely, referring to FIG. 6 and FIG. 7A, the first heat dissipating unit 1A includes a plurality of first airflow-guiding inlets 11A and a plurality of first outlets 12A respectively corresponding to the first airflow-guiding inlets 11A. Each of the first airflow-guiding inlets 11A is formed between the two adjacent first inclined airflow-guiding sections 1010A of the first heat dissipating unit 1A, and each of the first outlets 12A is formed between the two adjacent second end portions 102A of the first heat dissipating unit 1A. Referring to FIG. 6 and FIG. 7B, the second heat dissipating unit 1B includes a plurality of second airflow-guiding inlets 11B and a plurality of second outlets 12B respectively corresponding to the second airflow-guiding inlets 11B. Each of the second airflow-guiding inlets 11B is formed between the two adjacent second inclined airflow-guiding sections 1010B of the second heat dissipating unit 1B, each of the second outlets 12B is formed between the two adjacent second end portions 102B of the second heat dissipating unit 1B.

Furthermore, referring to FIG. 7A and FIG. 7B, the fan unit 2 includes at least one fan 20 adjacent to the first heat dissipating unit 1A and the second heat dissipating unit 1B, and the at least one fan 20 can concurrently face both the first inclined airflow-guiding section 1010A of the first end portion 101A of each first heat dissipating fin 10A and the second inclined airflow-guiding section 1010B of the first end portion 101B of each second heat dissipating fin 10B.

More precisely, referring to FIG. 7A, because the first inclined airflow-guiding section 1010A of the first end portion 101A of each first heat dissipating fin 10A is bent downward and slantwise relative to the connection portion 103A by the first predetermined acute angle θ1 less than 90 degrees, oblique upward cooling airs W1 generated by the at least one fan 20 can easily and unobstructively flow into the first heat dissipating unit 1A through the first airflow-guiding inlets 11A, so as to increase the heat dissipating efficiency of the first heat dissipating fins 10A of the first heat dissipating unit 1A. In addition, referring to FIG. 7B, because the second inclined airflow-guiding section 1010B of the first end portion 101B of each second heat dissipating fin 10B is bent upward and slantwise relative to the connection portion 103B by the second predetermined acute angle θ2 less than 90 degrees, oblique downward cooling airs W2 generated by the at least one fan 20 can easily and unobstructively flow into the second heat dissipating unit 1B through the second airflow-guiding inlets 11B, so as to increase the heat dissipating efficiency of the second heat dissipating fins 10B of the second heat dissipating unit 1B.

In conclusion, the heat dissipating efficiency of the heat dissipating module M can be increased due to the design of “the first inclined airflow-guiding section 1011 of the first end portion 101 of each heat dissipating fin 10 is bent downward and slantwise, and the second inclined airflow-guiding section 1012 of the first end portion 101 of each heat dissipating fin 10 is bent upward and slantwise” or “the first end portion 1010A of each first heat dissipating fin 10A has a first inclined airflow-guiding section 1010A bent downward and slantwise, and the first end portion 101B of each second heat dissipating fin 10B has a second inclined airflow-guiding section 1010B bent upward and slantwise”.

The aforementioned descriptions merely represent the preferred embodiments of the instant disclosure, without any intention to limit the scope of the instant disclosure which is fully described only within the following claims. Various equivalent changes, alterations or modifications based on the claims of the instant disclosure are all, consequently, viewed as being embraced by the scope of the instant disclosure. 

What is claimed is:
 1. A heat dissipating module, comprising: a heat dissipating unit including a plurality of heat dissipating fins sequentially stacked on top of one another, wherein each of the heat dissipating fins has a first end portion and a second end portion opposite to the first end portion, the first end portion of each heat dissipating fin is divided into a first inclined airflow-guiding section and a second inclined airflow-guiding section separated from the first inclined airflow-guiding section, the first inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent downward and slantwise, and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent upward and slantwise; and a fan unit including at least one fan adjacent to the heat dissipating unit, wherein the at least one fan faces both the first inclined airflow-guiding section and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin.
 2. The heat dissipating module of claim 1, wherein each of the heat dissipating fins has a connection portion integrally connected between the first end portion and the second end portion, any two adjacent connection portions are separated from each other by a predetermined distance, both the first inclined airflow-guiding section and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin are slantwise connected to the connection portion, and the second end portion of each heat dissipating fin is horizontal to the connection portion.
 3. The heat dissipating module of claim 1, wherein each of the heat dissipating fins has a connection portion connected between the first end portion and the second end portion, the first inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent downward and slantwise relative to the connection portion by a first predetermined acute angle less than 90 degrees, and the second inclined airflow-guiding section of the first end portion of each heat dissipating fin is bent upward and slantwise relative to the connection portion by a second predetermined acute angle less than 90 degrees.
 4. The heat dissipating module of claim 1, wherein the heat dissipating unit includes a plurality of first airflow-guiding inlets, a plurality of second airflow-guiding inlets respectively adjacent to the first airflow-guiding inlets, and a plurality of common outlets respectively corresponding to the first airflow-guiding inlets or the second airflow-guiding inlets, each of the first airflow-guiding inlets is formed between the two adjacent first inclined airflow-guiding sections, each of the second airflow-guiding inlets is formed between the two adjacent second inclined airflow-guiding sections, and each of the common outlets is formed between the two adjacent second end portions, wherein cooling airs generated by the at least one fan flow into the heat dissipating unit through both the first airflow-guiding inlets and the second airflow-guiding inlets.
 5. The heat dissipating module of claim 1, further comprising: a heat pipe unit including a plurality of heat pipe structures, wherein each of the heat pipe structures passes through the heat dissipating fins, and the at least one fan is an axial flow fan.
 6. A heat dissipating module, comprising: a first heat dissipating unit including a plurality of first heat dissipating fins sequentially stacked on top of one another, wherein each of the first heat dissipating fins has a first end portion and a second end portion opposite to the first end portion, the first end portion of each first heat dissipating fin has a first inclined airflow-guiding section bent downward and slantwise; a second heat dissipating unit separated from the first heat dissipating unit by a predetermined distance, the second heat dissipating unit including a plurality of second heat dissipating fins sequentially stacked on top of one another and respectively corresponding to the first heat dissipating fins, wherein each of the second heat dissipating fins has a first end portion and a second end portion opposite to the first end portion, the first end portion of each second heat dissipating fin has a second inclined airflow-guiding section bent upward and slantwise; and a fan unit including at least one fan adjacent to the first heat dissipating unit and the second heat dissipating unit, wherein the at least one fan faces both the first inclined airflow-guiding section of the first end portion of each first heat dissipating fin and the second inclined airflow-guiding section of the first end portion of each second heat dissipating fin.
 7. The heat dissipating module of claim 6, wherein each of the first heat dissipating fins has a connection portion integrally connected between the first end portion and the second end portion of the first heat dissipating fin, any two adjacent connection portions of the first heat dissipating fin are separated from each other by a predetermined distance, the first inclined airflow-guiding section of the first end portion of each first heat dissipating fin is slantwise connected to the connection portion of the first heat dissipating fin, and the second end portion of each first heat dissipating fin is horizontal to the connection portion of the first heat dissipating fin, wherein each of the second heat dissipating fins has a connection portion integrally connected between the first end portion and the second end portion of the second heat dissipating fin, any two adjacent connection portions of the second heat dissipating fin are separated from each other by a predetermined distance, the second inclined airflow-guiding section of the first end portion of each second heat dissipating fin is slantwise connected to the connection portion of the second heat dissipating fin, and the second end portion of each second heat dissipating fin is horizontal to the connection portion of the second heat dissipating fin.
 8. The heat dissipating module of claim 6, wherein each of the first heat dissipating fins has a connection portion connected between the first end portion and the second end portion of the first heat dissipating fin, and the first inclined airflow-guiding section of the first end portion of each first heat dissipating fin is bent downward and slantwise relative to the connection portion of the first heat dissipating fin by a first predetermined acute angle less than 90 degrees, wherein each of the second heat dissipating fins has a connection portion connected between the first end portion and the second end portion of the second heat dissipating fin, and the second inclined airflow-guiding section of the first end portion of each second heat dissipating fin is bent upward and slantwise relative to the connection portion of the second heat dissipating fin by a second predetermined acute angle less than 90 degrees
 9. The heat dissipating module of claim 6, wherein the first heat dissipating unit includes a plurality of first airflow-guiding inlets and a plurality of first outlets respectively corresponding to the first airflow-guiding inlets, each of the first airflow-guiding inlets is formed between the two adjacent first inclined airflow-guiding sections of the first heat dissipating unit, each of the first outlets is formed between the two adjacent second end portions of the first heat dissipating unit, and cooling airs generated by the at least one fan flow into the first heat dissipating unit through the first airflow-guiding inlets.
 10. The heat dissipating module of claim 6, wherein the second heat dissipating unit includes a plurality of second airflow-guiding inlets and a plurality of second outlets respectively corresponding to the second airflow-guiding inlets, each of the second airflow-guiding inlets is formed between the two adjacent second inclined airflow-guiding sections of the second heat dissipating unit, each of the second outlets is formed between the two adjacent second end portions of the second heat dissipating unit, and cooling airs generated by the at least one fan flow into the second heat dissipating unit through the second airflow-guiding inlets. 